Born in 57 BBY (before the battle of Yavin) he speaks with a Coruscanti accent. In his early years of being a jedi (actually Padawan or Youngling if you prefer) he was trained by Yoda and due to unforseen circumstances he was switched to Qui-Gonn Jinn. (in fact a much more powerful jedi than obi wan)
Due to Obi Wans high leadership in the Jedi Council, and the other fact that discovered a clone army that the Kaminoans are building for the Republic, He was quickly made a general in just that. He was made a war hero as he went on to becoming one of the greatest Jedi Nights the council has ever seen.
Unfortunately he raises Anakin Skywalker as a Padawan.... and well you know
Kenobi rescues his former apprentices son Luke Skywalker. He sacrifices himself to save Leia, Chewbacca, Han Solo, and Luke.
Obi Wan uses the power he learns from Qui Gonn to come back and project himself as a hologram using the force, and still mentors Luke.

Obi Wan Kenobi is the Jedi who trains Anakin Skywalker otherwise known as Darth Vader. He is very wise and powerful. His master, the one who trained him was Qui-Gon Jin, he was killed. Obi-Wan despite what some say, did train Anakin well. Vader kills him, but Obi-Wan lives on as one with the force. Soon after Anakin redeems himself and joins his old master.

Obi Wan Kenobi: Why do I get the feeling you're going to be the death of me?

Anakin: Don't say that, master. You're the closest thing I have to a father.

Obi-Wan Kenobi was the padawan of Qui-Gon Jinn. He was involved in the Naboo Crisis. Where Jinn was killed by Darth Maul. Obi-wan was nearly killed, until he jumped and cut Maul in half. He then Took Anakin Skywalker as his padawan. He was knighted by Yoda. He uncovered Dookus plot to destroy the Republic. He also killed General Grievous and helped save Palpatine from Grievous. Then after Order 66 he went ino hiding as “Ben” Kenobi, where he was discovered by Luke Skywalker. Then Obi-Wan let himself be killed by Darth Vader his former apprentice.